Stosur said she felt comfortable on court and was pleased with her play, despite being unable to capitalise on crucial opportunities including a set point on Saturday and match point on Sunday.

The opening rubber in the best-of-five tie saw Kvitova beat Gajdosova 7-6 (7-2) 6-3 on the indoor hard surface at the eastern Czech city of Ostrava.

"I'm very happy about the result but I think it's a little tough for the Australians to go 4-0 because all matches were tighter than maybe the score appears. They had set points, they had match points," Czech captain Petr Pala said.

While the home team progresses to a semi-final against Italy in April, Australia faces a playoff to remain in the top-eight world group.

A draw this week will decide where and against which country the Australians play, with possible opponents including Germany, Spain, Sweden, and Switzerland, who each won their world group II matches at the weekend.

"I think we've got the talent to, our players are more than good enough to remain in the world group," Molik said.

"We're a top-eight team I believe, every day of the week."

While the Czechs posted an unassailable 3-0 lead on Sunday, a subsequent doubles match went ahead as planned.